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Introduction Dalhousie University Winter 2019 This Course in a - PowerPoint PPT Presentation

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CSCI 2132: Software Development Norbert Zeh Faculty of Computer Science Introduction Dalhousie University Winter 2019 This Course in a Nutshell This course will be your first step towards becoming a better software developer. Software Unix

  1. CSCI 2132: Software Development Norbert Zeh Faculty of Computer Science Introduction Dalhousie University Winter 2019

  2. This Course in a Nutshell This course will be your first step towards becoming a better software developer. Software Unix C programming development • Shells • Procedural • Testing • Command-line tools • Low-level • Debugging • Close to hardware • Source code management • Software development methodologies

  3. Programming in the Large (Learning Objective 1) Challenges: • Software systems composed of multiple modules (parts) • Modules often written by different users Techniques: • Software development process/methodologies • Software testing and debugging • Source code management

  4. Low-Level Programming (Learning Objective 2) Understand how computer systems work “under the hood”: • High-level programming: • High level of abstraction • Close to user (programmer) • Low-level programming: • Close to hardware This supports learning objective 1: • Would you like someone to design a car 
 without knowing how cars work? • Provide examples of abstractions • Understand the runtime cost of abstractions

  5. Why Unix? • First popular multi-user OS that set a standard • Stable • Powerful command-line interface (CLI): 
 Command line = GUI + IDE for power users • Many utilities , well known, standard tools • Philosophy of elegant and modular solutions • Widely used on servers, desktops, and mobile devices 
 (UNIX, BSD, Linux, macOS, Android, …)

  6. Open Unix-Style Model • Does not hide operating system operations • Provides all low-level abstractions used in modern operating systems: • Text-based interface • Files • Processes • Pipes • Virtual memory (process isolation)

  7. Why C? • Widely used: • Systems written in C: UNIX, Linux, … • Languages influenced by C: C++, PHP, Java, C#, Rust, … • Low-level programming language: • Close to machine, gives programmer fine-grained control • No garbage collection, no virtual machine, compiled • 0-overhead principle • Forces programmer to think about low-level issues • “Lingua franca” of programming world: • Interface between different programming languages 
 often uses C-style calling conventions

  8. Instructor Norbert Zeh Name: nzeh@cs.dal.ca Email: MC 4246 Office: Office hours: MWF 12:00–14:00 TBD TAs:

  9. Lectures and Labs Lectures MWF 3:30–4:30 McCain Auditorium 1 Labs M 8:30–10:00 Mona Campbell 1201 B01 M 8:30–10:00 Goldberg 143 B02 M 10:00–11:30 Mona Campbell 1201 B03 M10:00–11:30 Goldberg 143 B04

  10. Important Dates Monday, Jan 7 Lectures start Friday, Feb 1 Munro Day (university closed) Monday, Feb 18 NS Heritage Day (university closed) Feb 18–22 Study Break (no classes) Monday, Apr 8 Last lecture The “fun” stuff Monday, Feb 4, 6:30–8:30 (PM) Midterm 1 Monday, Mar 4, 6:30–8:30 (PM) Midterm 2 TBD Apr 10–26 Final

  11. Lectures • Slides available online • Longer examples (programs) • Code will be available electronically: 
 (few comments, blank parts) • Blanks will be filled in in class, take notes • Fill in the blanks after class, run on bluenose, study the code

  12. Exams • Photo ID required • Closed book • Cheat sheet: One single sheet, front and back, is allowed • No calculators • No cell phone • No notes • No dictionaries • No other aids (electronic or paper)

  13. Evaluation Assignments (30%) • 7–10 assignments, best n–1 count • Late assignments not accepted • Submit electronically Midterms (20%) • 2 midterms, 10% each • In the evening Final exam (50%) • Scheduled by university • Covers all material covered in the course

  14. Evaluation of Programming Assignments Criteria: • Correctness • Design • Documentation Correctness: • Will be evaluated using automatic testing • Similar to client evaluation of software product • Program must compile and pass at least the test cases given in the assignment

  15. What to do When Your Program is Incorrect? Do: • Debug! • Try to make your program work for simple cases if you run out of time. • You will learn a lot from debugging. • You will spend much of your time as a programmer testing and debugging. Do not: • Keep writing your program without testing. • You will learn little by simply writing code without testing it.

  16. Lab Work • Labs are mandatory , • Cover material more suitable to be explored in a lab than in lectures, • Help you get ready for assignments, • Will likely cover some material not covered in lectures or assignments.

  17. Programming Environment: Labs In the lab: • ssh from Mac/Windows (use PuTTY on Windows) • Server: bluenose.cs.dal.ca At home: • ssh from Mac/Windows/Linux • Work directly on a Linux PC • Run Linux in a VirtualBox Note: All evaluation will happen on bluenose • Make sure your code compiles and runs correctly on bluenose

  18. Academic Integrity Policy https://www.dal.ca/dept/university_secretariat/academic-integrity.html • Suspected cases of plagiarism referred to Academic Integrity Officer • Serious consequences if found guilty • Plagiarism = “presentation of work of another author as your own” • Fully reference sources in your assignments and reports • You can look at other code, but do not • Cut and paste • Copy verbatim (or with only cosmetic changes) • You can discuss assignments, do not exchange notes

  19. Dalhousie Culture of Respect • We believe that inclusiveness is fundamental to education and learning. • Every person has the right to be respected and safe . • Misogyny and disrespectful behaviour on campus, in the wider community or on social media is not acceptable . • We stand for equality and hold ourselves to a higher standard. • Take an active role: • Be ready: Don’t remain silent. • Identify the behaviour, avoid labelling, name-calling or blame • Appeal to principles, particularly with friends and co-workers • Set limits • Find an ally and be an ally, lead by example • Be vigilant

  20. Textbooks Required: • K.N. King. C Programming: A Modern Approach. W.W. Norton & Company, 2008. • G. Glass and K. Ables. UNIX for Programmers and Users. Prentice Hall, 2003. Recommended: • E. Nemeth, G. Snyder, T.R. Hein, and B. Whaley. UNIX and Linux System Administration Handook. 4th ed. Pearson Education, 2010. • B.W. Kerninghan and D.M. Ritchie. The C Programming Language. 2nd ed. Prentice Hall Software Series, 1988.

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